betta_lover, I'm pretty new on the forums, so I don't know you that well, but here's my two cents: I was quite the nightmare as a teenager, probably worse than you in fact. Manic depression, an eating disorder, excessive drinking, forever in trouble at school (both grades-wise and in other ways), no friends and all. Through a chain of rather unfortunate events which ended in a breakup with a much older boyfriend, I tried to commit suicide. I had to move 8,000 miles away from it all to finally get back on my feet and start living. Now, things aren't perfect, but they're quite nice.
I know you're probably tired of hearing this, but it will get better once you're out of high school and are able to leave home and make your own decisions. Devote yourself to your animals for the moment, try to get the best marks you can in school so that you have choices later in life, and don't get involved in the same kind of problems that I did ;) Keep your head down and your chin up! Many of us know exactly how you feel and are here to help. Hugs and I wish all the best for you.